4555840 has 56 divisors (see below), whose sum is σ = 11338560. Its totient is φ = 1740288.

The previous prime is 4555829. The next prime is 4555843. The reversal of 4555840 is 485554.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4555843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7051 + ... + 7669.

Almost surely, 2^4555840 is an apocalyptic number.

4555840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4555840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5669280).

4555840 is an abundant number, since it is smaller than the sum of its proper divisors (6782720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4555840 is a wasteful number, since it uses less digits than its factorization.

4555840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 4555840 is about 2134.4413789092. The cubic root of 4555840 is about 165.7764446052.

The spelling of 4555840 in words is "four million, five hundred fifty-five thousand, eight hundred forty".